EP 2224433 A1 20100901 - An apparatus for processing an audio signal and method thereof
Title (en)
An apparatus for processing an audio signal and method thereof
Title (de)
Vorrichtung zur Verarbeitung eines Audiosignals und Verfahren dafür
Title (fr)
Appareil pour traiter un signal audio et son procédé
Publication
Application
Priority
- EP 09012221 A 20090925
- US 10026308 P 20080925
- US 11864708 P 20081130
- KR 20090090705 A 20090924
Abstract (en)
An apparatus for processing an audio signal and method thereof are disclosed. The present invention includes receiving a spectral data of lower band and type information indicating a particular band extension scheme for a current frame of the audio signal from among a plurality of band extension schemes including a first band extension scheme and a second band extension scheme, by an audio processing apparatus; when the type information indicates the first band extension scheme for the current frame, generating a spectral data of higher band in the current frame using the spectral data of lower band by performing the first band extension scheme; and when the type information indicates the second band extension scheme for the current frame, generating the spectral data of higher band in the current frame using the spectral data of lower band by performing the second band extension scheme, wherein the first band extension scheme is based on a first data area of the spectral data of lower band, and wherein the second band extension scheme is based on a second data area of the spectral data of lower band.
IPC 8 full level
G10L 19/025 (2013.01); G10L 21/038 (2013.01)
CPC (source: EP US)
G10L 19/008 (2013.01 - US); G10L 19/025 (2013.01 - EP US); G10L 21/038 (2013.01 - EP US); G10L 19/02 (2013.01 - US)
Citation (search report)
- [X] WO 02052545 A1 20020704 - CODING TECHNOLOGIES SWEDEN AB [SE], et al
- [A] WO 9857436 A2 19981217 - LILJERYD LARS GUSTAF [SE], et al
- [A] WO 0191111 A1 20011129 - CODING TECHNOLOGIES SWEDEN AB [SE], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2169670 A2 20100331; EP 2169670 A3 20100428; EP 2169670 B1 20160720; EP 2224433 A1 20100901; EP 2224433 B1 20200527; US 2010114583 A1 20100506; US 8831958 B2 20140909; WO 2010036061 A2 20100401; WO 2010036061 A3 20100722
DOCDB simple family (application)
EP 09012221 A 20090925; EP 10005705 A 20090925; KR 2009005499 W 20090925; US 56755909 A 20090925